Thought I'd check,
Good News!
Borrachas E Autopecas in South America have started manufacturing rebuild kits.
For a South American product, the quality seems very high...
Anyway,
Front inspection plate off,
Top Cast off
Gaskets scraped out,
Filter and bolt removed,
Castings separated,
Diaphragm out,
Springs and push lever removed, (looks worn!)
Full degrease on all components,
...
Replacements in the kit - £25.00!
Now to assemble, pre-tension diaphragms and test pressure....